You ound a carton o 2% pasteurized milk sn the re rigerator that expired yesterd

Question

You ound a carton o 2% pasteurized milk sn the re rigerator that expired yesterday. You want to know s you should drinkit so make serial dilutions o the sample. The dilutions you make Your results are listed in the table belovw TMTC 2431 68 TMIt 1820 53 TMTC .4 884 10-6 82 The total number of CFU on the 10-6 plate is The concentration of the inoculum for the 10-6 plate is The total number of colony forming units in one milliliter of the original sample is (Round to the nearest whole number.) (Do NOT use scientific notation, commas, or units) The total number of colony forming units in ten milliliters of the original sample is (Do NOT use scientific notation, commas, or units)

Explanation / Answer

1. The total number of Colony forming units in 10-6 plate is 203 (total triplicates count). and average number per plate is 70 (rounded value).

2. The concentration of inoculum for 10 -6 plate is 27 cells/ml.

3. The total number of colony forming units in 1 ml of original sample is 2101410 cells.

4. the total number of colony forming units in ten millileters of the original sample is 21014100 cells.

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